dc.contributor
Universitat Rovira i Virgili. Departament d'Enginyeria Mecànica
dc.contributor.author
Ariyadi, Hifni Mukhtar
dc.date.accessioned
2016-10-19T12:16:27Z
dc.date.available
2016-10-19T12:16:27Z
dc.date.issued
2016-09-20
dc.identifier.uri
http://hdl.handle.net/10803/396178
dc.description.abstract
This thesis was aimed to analyse the feasibility and the performance of ionic liquids as an absorbent for ammonia refrigerant in absorption refrigeration systems. Ionic liquids, novel and tailor-made absorbents, can be used with ammonia as working pairs for absorption refrigeration cycles and give some advantages such as elimination of the rectification process in ammonia/water systems. The performances of several ammonia/ionic liquid mixtures working pair available in the literature were then theoretically studied and analysed for absorption refrigeration applications using selected NRTL model. In addition, new selected ammonia/ionic liquid mixtures working pair for absorption refrigeration applications were also theoretically studied and analysed. The results show that the coefficient of performance (COP) of the absorption systems working with ammonia/ionic liquid working fluids were about similar when compared with ammonia/LiNO3 at same cooling capacity and operation conditions. Among all of selected ammonia/ionic liquid working fluids studied in this thesis, only [N1113][NTf2] presented higher COP that that of ammonia/LiNO3 at certain operation conditions. The COP of the systems with other ionic liquids as absorbents follows an order of [EtOHmim][BF4] > [N111(2OH)][NTf2] > [EtOHmim][NTf2] at all operation conditions. Finally it can be concluded that the ionic liquid has a great potential to be an alternative absorbent for ammonia refrigerant. The ammonia/ionic liquid working fluid can provide competitive performance in comparison with conventional absorbent for ammonia refrigerant. However, some drawbacks were still remains to be solved such as relatively low solubility of ammonia into ionic liquids which affects to the solution circulation mass flow ratio and relatively high viscosity of ionic liquid in comparison with other conventional absorbent which may affects to the performance of absorber and solution pump.
en_US
dc.format.extent
252 p.
en_US
dc.format.mimetype
application/pdf
dc.language.iso
eng
en_US
dc.publisher
Universitat Rovira i Virgili
dc.rights.license
ADVERTIMENT. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al servei TDX. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs.
dc.source
TDX (Tesis Doctorals en Xarxa)
dc.subject
Termodinamica
en_US
dc.subject
Absorcion
en_US
dc.subject
Liquidos Ionicos
en_US
dc.subject
Absorció
en_US
dc.subject
Líquids ionics
en_US
dc.subject
Thermodynamic
en_US
dc.subject
Absorption
en_US
dc.subject
Ionic Liquid
en_US
dc.subject.other
Enginyeria i Arquitectura
en_US
dc.title
Thermodynamic study on absorption refrigeration systems using ammonia/ionic liquid working pairs
en_US
dc.type
info:eu-repo/semantics/doctoralThesis
dc.type
info:eu-repo/semantics/publishedVersion
dc.contributor.director
Coronas Salcedo, Alberto
dc.embargo.terms
cap
en_US
dc.rights.accessLevel
info:eu-repo/semantics/openAccess
